The Egyptians used clear Oasis oil which was a kind of palm oil. The clearer the oil the better.
The Egyptians used a lamp that was red in colour which is the colour of the God Set. Set is in fact the God of evil.
It may be advisable for you to use a white lamp. Place your lamp on a table and sit on the west side facing east across the lamp.
You should address your invocation to the Greco Roman God who rules the day you scy on.
Gently focus on the flames of the lamp. You will begin to see moving shadows off to the side.
Do not look directly at the shadows or they will vanish. Ask the shadows what it is you seek.
You may hear voices or you may see images.